Hello, n7167113!
We have: .Find
We know: . ,
Use DeMoivre's Formula for the six roots of: .
This doesn't simplify very much, but here goes . . .Simplify: .
Multiply by
. .
I have 2 questions:
can somebody help me with these 2 questions showing working out?
- find for z ; where z^3=sqrt[imaginary]
- Simplify: sin x/(1-cos x)
Please & Thank You